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c-opts.c (CL_REJECT_NEGATIVE): New.

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* c-opts.c (CL_REJECT_NEGATIVE): New.
	(c_common_decode_option): Update to use it.
	* c.opt: Update documentation; use RejectNegative.
	* opts.sh: Handle RejectNegative.

From-SVN: r67325
This commit is contained in:
Neil Booth 2003-06-02 05:48:30 +00:00 committed by Neil Booth
parent d48b7f2a3f
commit c83857ff28
4 changed files with 32 additions and 22 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-06-02 Neil Booth <neil@daikokuya.co.uk>
* c-opts.c (CL_REJECT_NEGATIVE): New.
(c_common_decode_option): Update to use it.
* c.opt: Update documentation; use RejectNegative.
* opts.sh: Handle RejectNegative.
2003-06-01 Zack Weinberg <zack@codesourcery.com>
* ggc-page.c (init_ggc): Give better diagnostics on failure to

32
gcc/c-opts.c
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@ -119,12 +119,13 @@ static void finish_options PARAMS ((void));
#define STDC_0_IN_SYSTEM_HEADERS 0
#endif
#define CL_C (1 << 0) /* Only C. */
#define CL_OBJC (1 << 1) /* Only ObjC. */
#define CL_CXX (1 << 2) /* Only C++. */
#define CL_OBJCXX (1 << 3) /* Only ObjC++. */
#define CL_JOINED (1 << 4) /* If takes joined argument. */
#define CL_SEPARATE (1 << 5) /* If takes a separate argument. */
#define CL_C (1 << 0) /* Only C. */
#define CL_OBJC (1 << 1) /* Only ObjC. */
#define CL_CXX (1 << 2) /* Only C++. */
#define CL_OBJCXX (1 << 3) /* Only ObjC++. */
#define CL_JOINED (1 << 4) /* If takes joined argument. */
#define CL_SEPARATE (1 << 5) /* If takes a separate argument. */
#define CL_REJECT_NEGATIVE (1 << 6) /* Reject no- form. */
#include "c-options.c"
@ -398,9 +399,15 @@ c_common_decode_option (argc, argv)
if (opt_index == N_OPTS)
goto done;
result = 1;
option = &cl_options[opt_index];
/* Reject negative form of switches that don't take negatives. */
if (!on && (option->flags & CL_REJECT_NEGATIVE))
goto done;
/* We've recognised this switch. */
result = 1;
/* Sort out any argument the switch takes. */
if (option->flags & (CL_JOINED | CL_SEPARATE))
{
@ -629,10 +636,7 @@ c_common_decode_option (argc, argv)
break;
case OPT_Werror_implicit_function_declaration:
if (!on)
result = 0;
else
mesg_implicit_function_declaration = 2;
mesg_implicit_function_declaration = 2;
break;
case OPT_Wfloat_equal:
@ -908,7 +912,7 @@ c_common_decode_option (argc, argv)
break;
case OPT_fdump_:
if (!on || !dump_switch_p (argv[0] + strlen ("-f")))
if (!dump_switch_p (argv[0] + strlen ("-f")))
result = 0;
break;
@ -1072,10 +1076,6 @@ c_common_decode_option (argc, argv)
break;
case OPT_ftabstop_:
/* Don't recognize -fno-tabstop=. */
if (!on)
return 0;
/* It is documented that we silently ignore silly values. */
{
char *endptr;

10
gcc/c.opt
View File

@ -24,7 +24,9 @@
; and each field appearing on its own line. The first field is the
; command-line switch with the leading "-" removed. All options
; beginning with "f" or "W" are implicitly assumed to take a "no-"
; form; this form should not be listed.
; form; this form should not be listed. If you do not want this
; negative form and you want it to be automatically rejected, add
; RejectNegative to the second field.
; The second field is a space-separated list of which parts of the
; compiler recognize the switch. Current valid entries are "C",
@ -144,7 +146,7 @@ Werror
C ObjC C++ ObjC++
Werror-implicit-function-declaration
C ObjC
C ObjC RejectNegative
Wfloat-equal
C ObjC C++ ObjC++
@ -339,7 +341,7 @@ fdollars-in-identifiers
C ObjC C++ ObjC++
fdump-
C ObjC C++ ObjC++ Joined
C ObjC C++ ObjC++ Joined RejectNegative
felide-constructors
C++ ObjC++
@ -465,7 +467,7 @@ fstrict-prototype
C++ ObjC++
ftabstop=
C ObjC C++ ObjC++ Joined
C ObjC C++ ObjC++ Joined RejectNegative
ftemplate-depth-
C++ ObjC++ Joined

5
gcc/opts.sh
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@ -48,8 +48,9 @@ cat "$@" | ${AWK} '
if (langs ~ ":ObjC:") flags = flags " | CL_OBJC"
if (langs ~ ":C\\+\\+:") flags = flags " | CL_CXX"
if (langs ~ ":ObjC\\+\\+:") flags = flags " | CL_OBJCXX"
if (langs ~ ":Joined") flags = flags " | CL_JOINED"
if (langs ~ ":Separate") flags = flags " | CL_SEPARATE"
if (langs ~ ":Joined:") flags = flags " | CL_JOINED"
if (langs ~ ":Separate:") flags = flags " | CL_SEPARATE"
if (langs ~ ":RejectNegative:") flags = flags " | CL_REJECT_NEGATIVE"
sub( "^0 \\| ", "", flags )
return flags
}